Nitrogen as a real gas

sunilpatil · March 15, 2015, 23:12

Hi everyone,
I am interested to simulate nitrogen passing through JT (joule Thomson) valve by considering nitrogen as a real gas (Isenthalpic Expansion). can you please suggest me any ANSYS Fluent tutorials on Real gas.

sunilpatil · April 11, 2016, 23:51

Hi I found out the way by considering nist real gas in fluent we can solve this problem

LuckyTran · April 12, 2016, 09:27

Just a comment. You don't need a real gas to simulate an isenthalpic expansion. But you can do a real gas using NIST.

sunilpatil · April 12, 2016, 09:51

Hi joule Thomson expansion is isenthalpic and that can be captured by considering real gas as working fluid. Please correct me I am wrong.

LuckyTran · April 12, 2016, 10:07

Quote:

Originally Posted by sunilpatil

Hi joule Thomson expansion is isenthalpic and that can be captured by considering real gas as working fluid. Please correct me I am wrong.

Joule Thompson expansion is really just an adiabatic expansion. That is a thermodynamic process from State A to State B. That is independent of the substance or the equation of state of the substance. Any substance can undergo an isenthalpic expansion. The J-T effect is a phenomenon that specifically occurs for a real gas and real substances (which has non-zero J-T coefficient). An ideal gas, by virtue of its definition has J-T coefficient = 0.

If you are simulating J-T effect, then you need to use real gas. But simulating an isenthalpic process is a different problem.

March 15, 2015, 23:12	Nitrogen as a real gas	#1
sunilpatil Senior Member sunil Join Date: Jul 2012 Location: Bangalore Posts: 181 Rep Power: 15	Hi everyone, I am interested to simulate nitrogen passing through JT (joule Thomson) valve by considering nitrogen as a real gas (Isenthalpic Expansion). can you please suggest me any ANSYS Fluent tutorials on Real gas.

April 11, 2016, 23:51		#2
sunilpatil Senior Member sunil Join Date: Jul 2012 Location: Bangalore Posts: 181 Rep Power: 15	Hi I found out the way by considering nist real gas in fluent we can solve this problem __________________ Regards, Sunil

April 12, 2016, 09:51		#4
sunilpatil Senior Member sunil Join Date: Jul 2012 Location: Bangalore Posts: 181 Rep Power: 15	Hi joule Thomson expansion is isenthalpic and that can be captured by considering real gas as working fluid. Please correct me I am wrong. __________________ Regards, Sunil

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April 12, 2016, 09:27		#3
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,843 Rep Power: 68	Just a comment. You don't need a real gas to simulate an isenthalpic expansion. But you can do a real gas using NIST.